CPC 2 receives no Data from the FMGS

TASK 21-31-00-810-813-A
CPC 2 receives no Data from the FMGS

1. Possible Causes

PRESS CONT 2 [12HL]
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-31-00-710-002	Operational Test of the Pressure Control and Monitoring
ASM 213103
AMM 21-31-34-000-001	Removal of the Cabin Pressure Controller
AMM 21-31-34-400-001	Installation of the Cabin Pressure Controller
AMM 22-96-00-710-001	Operational Test of the AFS

3. Fault Confirmation
Subtask 21-31-00-710-074-A

A. Test
(1) Do a read-out of the CLASS III FAULT REPORT of the cabin pressure-control system 2.

NOTE: If a fault is detected, the CLASS III FAULT REPORT of the CPC shows a fault code for shop maintenance in addition to the related CFDS message(s). For detailed information see the applicable Page Block 301.

(2) Start the FMS (1+2).
(3) Do the operational test of the pressure control and monitoring system AMM 21-31-00-710-002.

4. Fault Isolation
Subtask 21-31-00-810-081-A

A. If the test with the CPC 2 (12HL) gives the maintenance message NO DATA FROM FMGS 1 (54):

swap the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.

(1) If the fault moves with the CPC 2:

swap back the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.
replace the PRESS CONT 2 [12HL] AMM 21-31-34-000-001 and AMM 21-31-34-400-001.

(2) If the fault does not move with the CPC 2:

swap back the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.
do the operational test of the AFS AMM 22-96-00-710-001.

(a) If the test gives a different maintenance message, refer to the Fault Symptom List.
(b) If the fault continues:

do a check and repair the wiring of the signal ARINC 429 OUT from the FMGC 1 (1CA1) to the CPC 2 (12HL) ASM 213103.

Subtask 21-31-00-810-082-A

B. If the test with the CPC 2 (12HL) gives the maintenance message NO DATA FROM FMGS 2 (55):

swap the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.

(1) If the fault moves with the CPC 2:

swap back the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.
replace the PRESS CONT 2 [12HL] AMM 21-31-34-000-001 and AMM 21-31-34-400-001.

(2) If the fault does not move with the CPC 2:

swap back the CPC 1 (11HL) and the CPC 2 (12HL) AMM 21-31-34-000-001 and AMM 21-31-34-400-001.
do the operational test of the AFS AMM 22-96-00-710-001.

(a) If the test gives a different maintenance message, refer to the Fault Symptom List.
(b) If the fault continues:

do a check and repair the wiring of the signal ARINC 429 OUT from the FMGC 2 (1CA2) to the CPC 2 (12HL) ASM 213103.

Subtask 21-31-00-710-075-A

C. Do the test as given in the Para. 3.A.

5. Close-up
Subtask 21-31-00-860-062-A

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:24:42 UTC